@@ -400,7 +400,7 @@ func (d *Daemon) queryRootDir() (string, error) {

 	var b []byte

 	var i Info

 	b, err = readBody(body)

-	if err == nil && resp.StatusCode == 200 {

+	if err == nil && resp.StatusCode == http.StatusOK {

 		// read the docker root dir

 		if err = json.Unmarshal(b, &i); err == nil {

 			return i.DockerRootDir, nil

@@ -152,7 +152,7 @@ func (t *testNotary) Ping() error {

 	if err != nil {

 		return err

 	}

-	if resp.StatusCode != 200 {

+	if resp.StatusCode != http.StatusOK {

 		return fmt.Errorf("notary ping replied with an unexpected status code %d", resp.StatusCode)

 	}

 	return nil

@@ -125,7 +125,7 @@ func TestResponseModifier(t *testing.T) {

 	m := NewResponseModifier(r)

 	m.Header().Set("h1", "v1")

 	m.Write([]byte("body"))

-	m.WriteHeader(500)

+	m.WriteHeader(http.StatusInternalServerError)

 	m.FlushAll()

 	if r.Header().Get("h1") != "v1" {

@@ -134,7 +134,7 @@ func TestResponseModifier(t *testing.T) {

 	if !reflect.DeepEqual(r.Body.Bytes(), []byte("body")) {

 		t.Fatalf("Body value must exists %s", r.Body.Bytes())

 	}

-	if r.Code != 500 {

+	if r.Code != http.StatusInternalServerError {

 		t.Fatalf("Status code must be correct %d", r.Code)

 	}

 }

@@ -177,7 +177,7 @@ func TestResponseModifierOverride(t *testing.T) {

 	m := NewResponseModifier(r)

 	m.Header().Set("h1", "v1")

 	m.Write([]byte("body"))

-	m.WriteHeader(500)

+	m.WriteHeader(http.StatusInternalServerError)

 	overrideHeader := make(http.Header)

 	overrideHeader.Add("h1", "v2")

@@ -188,7 +188,7 @@ func TestResponseModifierOverride(t *testing.T) {

 	m.OverrideHeader(overrideHeaderBytes)

 	m.OverrideBody([]byte("override body"))

-	m.OverrideStatusCode(404)

+	m.OverrideStatusCode(http.StatusNotFound)

 	m.FlushAll()

 	if r.Header().Get("h1") != "v2" {

 		t.Fatalf("Header value must exists %s", r.Header().Get("h1"))

@@ -196,7 +196,7 @@ func TestResponseModifierOverride(t *testing.T) {

 	if !reflect.DeepEqual(r.Body.Bytes(), []byte("override body")) {

 		t.Fatalf("Body value must exists %s", r.Body.Bytes())

 	}

-	if r.Code != 404 {

+	if r.Code != http.StatusNotFound {

 		t.Fatalf("Status code must be correct %d", r.Code)

 	}

 }